Please add support for extra mouse buttons (1.19.2)

[Gitcrafter]

My computermouse has two additional buttons "mouse 4" and "mouse 5" which I assinged to reloading and unloading respectively, while the key binds menu shows that they are assinged, the aktions do not get triggered and while testing, I discovered, that your key binds don´t work with any mouse buttons, is this intended? If yes, could you please change it to allow non standard mouse buttons.